Tunnel Mode Playback (Applicable to 4K @ 60 FPS Fire TV Devices Only)

Important: The information about Tunnel Mode playback here applies only to Fire TV devices that support 4K @ 60 FPS (currently, this includes Fire TV Edition devices and Fire TV (Gen 3)). For more general information about 4K specifications, see 4K Ultra HD Specifications on Fire TV.

The hardware decoder for some Fire TV devices support playback of 4K @ 60 FPS. To play back 4K @ 60 FPS, the timing requirement of media pipeline is aggressive and the app may not be able to render 4K frames at 16 msec interval due to thread and process scheduling limitations of the kernel. This may result into frame drops and a sub-par movie experience. To get the best out of the hardware, use Tunnel Mode playback.